| 表面完整性对30CrMnSiNi2A钢疲劳极限的影响 |
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| 引用本文： | 高玉魁,刘天琦,殷源发,李向斌.表面完整性对30CrMnSiNi2A钢疲劳极限的影响[J].航空材料学报,2002,22(2):21-23. |
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| 作者姓名： | 高玉魁 刘天琦 殷源发 李向斌 |
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| 作者单位： | 北京航空材料研究院,北京,100095 |
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| 摘 要： | 采用喷丸强化和振动冲击强化两种表面形变强化方法改变 30CrMnSiNi2A钢的表面完整性 ,用升降法测定了 10 7循环周次下光滑试样的疲劳极限。试验结果表明 ,振动强化使疲劳极限提高 11% ,喷丸强化使疲劳极限提高 16 %。
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| 关 键 词： | 表面完整性 疲劳极限 喷丸强化 振动强化 |
| 文章编号： | 1005-5053(2002)02-0021-03 |
| 修稿时间： | 2002年2月15日 |
Influence of surface integrality on fatigue limit for 30CrMnSiNi2A steel |
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| GAO Yu kui,LIU Tian qi,YIN Yuan fa,LI Xiang bin.Influence of surface integrality on fatigue limit for 30CrMnSiNi2A steel[J].Journal of Aeronautical Materials,2002,22(2):21-23. |
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| Authors: | GAO Yu kui LIU Tian qi YIN Yuan fa LI Xiang bin |
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| Abstract: | The changes of surface integrality caused by shot peening and vibration peening were investigated and its influence on fatigue limit of 30CrMnSiNi2A steel for 10 7 cycles was determined. Due to the local plastic deformation, residual stresses are developed and the surface topography is changed. Results on the influence of shot peening and vibration peening on 30CrMnSiNi2A steel are compared. The results indicate that the fatigue endurance limit of the shot peened specimens is higher than the corresponding limit of the virgin specimens by about 16% and the fatigue limit of vibration peened specimens is higher than that of virgin specimens by about 11%. The reason why fatigue limit is improved is that surface integrality is modified by mechanical surface treatment such as shot peening and vibration peening. |
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| Keywords: | surface integrality fatigue limit shot peening vibration peening |
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